Navbar color schemes in Bootsrap - Mini Project: Build & Apply

Navbar Color Schemes with Bootstrap

📖 Scenario: You are building a website header that includes a navigation bar. You want to practice changing the color scheme of the navbar using Bootstrap classes.

🎯 Goal: Create a simple Bootstrap navbar and change its color scheme by applying different Bootstrap navbar color classes.

📋 What You'll Learn

Use Bootstrap 5 classes to create a responsive navbar

Apply the navbar-light and bg-light classes for a light color scheme

Apply the navbar-dark and bg-dark classes for a dark color scheme

Include a brand name inside the navbar

Ensure the navbar is responsive and accessible

💡 Why This Matters

🌍 Real World

Navigation bars are essential for websites to help users move between pages easily. Changing color schemes helps match the website's style and improves user experience.

💼 Career

Web developers often use Bootstrap to quickly build responsive and accessible navigation bars that look good on all devices.

1

Create a basic Bootstrap navbar

Write the HTML code to create a Bootstrap navbar with a nav element that has the classes navbar and navbar-expand-lg. Inside it, add a a element with the classes navbar-brand and the text MySite.

Bootsrap

  MySite
  

Hint

Use a nav element with classes navbar and navbar-expand-lg. Add a brand link with class navbar-brand and text MySite.

2

Add a light color scheme to the navbar

Add the Bootstrap classes navbar-light and bg-light to the nav element to give the navbar a light color scheme.

Bootsrap

  MySite
  

Hint

Add navbar-light and bg-light classes inside the nav element's class attribute.

3

Change the navbar to a dark color scheme

Replace the navbar-light and bg-light classes on the nav element with navbar-dark and bg-dark to switch the navbar to a dark color scheme.

Bootsrap

  MySite
  

Hint

Remove navbar-light and bg-light and add navbar-dark and bg-dark classes instead.

4

Make the navbar responsive and accessible

Add a button element with classes navbar-toggler and attributes type="button", data-bs-toggle="collapse", data-bs-target="#navbarNav", aria-controls="navbarNav", aria-expanded="false", and aria-label="Toggle navigation". Inside the button, add a span with class navbar-toggler-icon. Then add a div with classes collapse navbar-collapse and id navbarNav. Inside this div, add an unordered list ul with class navbar-nav and one list item li with class nav-item containing a link a with class nav-link and text Home.

Bootsrap

  MySite
  

Hint

Add a toggle button with the correct Bootstrap classes and ARIA attributes for accessibility. Add a collapsible div with a navigation list inside.

Practice

1. Which Bootstrap class should you use to make the navbar text dark and suitable for a light background?

easy

A. navbar-dark

B. navbar-light

C. bg-dark

D. text-light

Solution

1. Step 1: Understand navbar text color classes

   The navbar-light class makes text dark for readability on light backgrounds.

2. Step 2: Match class to background type

   Since the background is light, navbar-light is appropriate, unlike navbar-dark which is for dark backgrounds.

3. Final Answer:

   navbar-light -> Option B

4. Quick Check:

   Light background needs dark text = navbar-light [OK]

Hint: Light background? Use navbar-light for dark text [OK]

Common Mistakes:

• Confusing navbar-light with navbar-dark
• Using bg-dark instead of navbar color scheme
• Applying text-light on light backgrounds

2. Which of the following is the correct way to apply a dark navbar with a dark background in Bootstrap?

easy

A. <nav class='navbar navbar-light bg-dark'>

B. <nav class='navbar navbar-dark bg-light'>

C. <nav class='navbar navbar-light bg-light'>

D. <nav class='navbar navbar-dark bg-dark'>

Solution

1. Step 1: Identify the correct navbar text color for dark background

   For dark backgrounds, navbar-dark ensures text is light and readable.

2. Step 2: Match background color class

   The background class bg-dark sets a dark background color.

3. Final Answer:

   <nav class='navbar navbar-dark bg-dark'> -> Option D

4. Quick Check:

   Dark background needs navbar-dark + bg-dark [OK]

Hint: Dark background? Use navbar-dark with bg-dark [OK]

Common Mistakes:

• Mixing navbar-light with bg-dark
• Using bg-light with navbar-dark
• Forgetting to include both navbar and bg classes

3. What will be the visible text color of the navbar brand in this code?

<nav class='navbar navbar-dark bg-primary'>
  <a class='navbar-brand' href='#'>Brand</a>
</nav>

medium

A. Dark text color

B. Primary blue text color

C. Light text color

D. Default black text color

Solution

1. Step 1: Understand navbar-dark effect on text

   The navbar-dark class makes text light-colored for contrast on dark backgrounds.

2. Step 2: Recognize bg-primary background

   bg-primary is a dark blue background, so light text is used for readability.

3. Final Answer:

   Light text color -> Option C

4. Quick Check:

   navbar-dark + dark bg = light text [OK]

Hint: navbar-dark means light text on dark backgrounds [OK]

Common Mistakes:

• Assuming text matches bg-primary color
• Thinking navbar-dark means dark text
• Ignoring the effect of navbar-dark on text color

4. Identify the error in this navbar code snippet:

<nav class='navbar navbar-light bg-dark'>
  <a class='navbar-brand' href='#'>Brand</a>
</nav>

medium

A. Using navbar-light with a dark background

B. Missing navbar-expand class

C. Incorrect use of navbar-brand class

D. Missing href attribute in anchor tag

Solution

1. Step 1: Check navbar color scheme consistency

   The class navbar-light is for light backgrounds, but bg-dark sets a dark background.

2. Step 2: Understand readability issue

   This mismatch causes dark background with dark text, reducing readability.

3. Final Answer:

   Using navbar-light with a dark background -> Option A

4. Quick Check:

   navbar-light must pair with light backgrounds [OK]

Hint: Match navbar-light with light bg, navbar-dark with dark bg [OK]

Common Mistakes:

• Ignoring navbar-expand necessity
• Thinking navbar-brand needs href fix
• Confusing navbar-light and navbar-dark usage

5. You want a navbar with a light background but dark text and a custom green background color using Bootstrap utilities. Which class combination is correct?

hard

A. navbar navbar-light bg-success

B. navbar navbar-dark bg-light

C. navbar navbar-light bg-light

D. navbar navbar-dark bg-success

Solution

1. Step 1: Identify background color and text color needs

   You want a light background with dark text. The green background bg-success is a bright green, considered light.

2. Step 2: Choose matching navbar text color class

   For light backgrounds, navbar-light is used to make text dark and readable.

3. Final Answer:

   navbar navbar-light bg-success -> Option A

4. Quick Check:

   Light bg (green) needs navbar-light for dark text [OK]

Hint: Light or bright bg? Use navbar-light for dark text [OK]

Common Mistakes:

• Using navbar-dark with bright green background
• Choosing bg-light instead of desired green
• Mixing navbar-dark with light backgrounds